Ok, read a bunch of posts on how foiling cuts down on the cooking time on these Butts.. Gonna Smoke a couple this weekend, and wondering if I wanna long or short smoke, Bark or no Bark. I may do one of each way for a experiment. But wondering what all you folks that have done it both ways, how much time does it knock off by foiling. I'm figuring at a temp of 235, a hour and a half per pound for the non-foil.